1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/char/rio/rio.h b/drivers/char/rio/rio.h
index b4c91871ba28..1bf36223a4e8 100644
--- a/drivers/char/rio/rio.h
+++ b/drivers/char/rio/rio.h
@@ -129,8 +129,8 @@
 **      RIO_OBJ takes hostp->Caddr and a UNIX pointer to an object and
 **      returns the offset into the DP RAM area.
 */
-#define RIO_PTR(C,O) (((unsigned char *)(C))+(0xFFFF&(O)))
-#define RIO_OFF(C,O) ((long)(O)-(long)(C))
+#define RIO_PTR(C,O) (((unsigned char __iomem *)(C))+(0xFFFF&(O)))
+#define RIO_OFF(C,O) ((unsigned char __iomem *)(O)-(unsigned char __iomem *)(C))
 
 /*
 **      How to convert from various different device number formats: